It appears to me to be the determination of General Thomas37 not to acknowledge the service of the officers who saved
the Territory of New Mexico; and the utter neglect of the
adjutant-general's department for the last year to
communicate in any way with the commanding officer of the
department of New Mexico, or to answer his urgent appeals
for reinforcements, for money and other supplies, in
connection with his repudiation of the services of all the
army there, convinces me that he is not gratified at their
loyalty and their success in saving that Territory to
the Union.

The sympathizers with and abettors of the Southern
Confederacy inaugurated their plans by posting handbills
in all conspicuous places between Denver and the
mining-camps, designating certain localities where the
highest prices would be paid for arms of every description,
and for powder, lead, shot, and percussion caps.
Simultaneously, a small force was collected and put under
discipline to co-operate with parties expected from Arkansas
and Texas who were to take possession, first of Colorado,
and subsequently of New Mexico, anticipating the easy
capture of the Federal troops and stores located there.
Being apprised of the movement, the governor immediately
decided to enlist a full regiment of volunteers.
John P. Slough was appointed colonel, Samuel F. Tappan
lieutenant-colonel, and John J. M. Chivington major.

Without railroads or telegraphs nearer than the Missouri
River, and wholly dependent upon the overland mail coach
for communication with the States and the authorities at
Washington, news was at least a week old when received.
Thus the troops passed the time in a condition of doubt
and extreme anxiety, until the 6th of January, 1862, when
information arrived that an invading force under General
H. H. Sibley, from San Antonio, Texas, was approaching
the southern border of New Mexico, and had already captured
Forts Fillmore and Bliss, making prisoners of their
garrisons without firing a gun, and securing all their
stock and supplies.

Immediately upon receipt of this intelligence, efforts
were made to obtain the consent of, or orders from, General
Hunter, commanding the department at Fort Leavenworth,
Kansas, for the regiment to go to the relief of General
Canby, then in command of the department of New Mexico.
On the 20th of February, orders came from General Hunter,
directing Colonel Slough and the First Regiment of Colorado
Volunteers to proceed with all possible despatch to
Fort Union, or Santa Fe, New Mexico, and report to General
Canby for service.

Two days thereafter, the command marched out of Camp Weld
two miles up the Platte River, and in due time encamped
at Pueblo, on the Arkansas River. At this point further
advices were received from Canby, stating that he had
encountered the enemy at Valverde, ten miles north of
Fort Craig, but, owing to the inefficiency of the newly
raised New Mexican volunteers, was compelled to retire.
The Texans under Sibley marched on up the Rio Grande,
levying tribute upon the inhabitants for their support.
The Colorado troops were urged to the greatest possible
haste in reaching Fort Union, where they were to unite
with such regular troops as could be concentrated at that
post, and thus aid in saving the fort and its supplies
from falling into Confederate hands. Early on the
following morning the order was given to proceed to Union
by forced marches, and it is doubtful if the same number of
men ever marched a like distance in the same length of time.

When the summit of Raton Pass was reached, another courier
from Canby met the command, who informed Colonel Slough
that the Texans had already captured Albuquerque and
Santa Fe with all the troops stationed at those places,
together with the supplies stored there, and that they
were then marching on Fort Union.

Arriving at Red River about sundown, the regiment was
drawn up in line and this information imparted to the men.
The request was then made for all who were willing to
undertake a forced march at night to step two paces to
the front, when every man advanced to the new alignment.
After a hasty supper the march was resumed, and at sunrise
the next morning they reached Maxwell's Ranch on the
Cimarron, having made sixty-four miles in less than
twenty-four hours. At ten o'clock on the second night
thereafter, the command entered Fort Union. It was there
discovered that Colonel Paul, in charge of the post, had
mined the fort, giving orders for the removal of the women
and children, and was preparing to blow up all the supplies
and march to Fort Garland or some other post to the
northward, on the first approach of the Confederates.

The troops remained at Union from the 13th to the 22d of
March, when by order of Colonel Slough they proceeded in
the direction of Santa Fe. The command consisted of
the First Colorado Volunteers; two Light Batteries,
one commanded by Captain Ritter and the other by Captain
Claflin; Ford's Company of Colorado Volunteers unattached;
two companies of the Fifth Regular Infantry; and two
companies of the Seventh United States Cavalry.

The force encamped at Bernal Springs, where Colonel Slough
determined to organize a detachment to enter Santa Fe by
night with the view of surprising the enemy, spiking his
guns, and after doing what other damage could be accomplished
without bringing on a general action, falling back on the
main body. The detachment chosen comprised sixty men each
from Companies A, D, and E of the Colorado regiment, with
Company F of the same mounted, and thirty-seven men each
from the companies of Captains Ford and Howland, and of
the Seventh Cavalry, the whole commanded by Major Chivington.

At sundown on the 25th of March it reached Kosloskie's Ranch,
where Major Chivington was informed that the enemy's pickets
were in the vicinity. He went into camp at once, and about
nine o'clock of the same evening sent out Lieutenant Nelson
of the First Colorado with thirty men of Company F, who
captured the Texan pickets while they were engaged in a game
of cards at Pigeon's Ranch, and before daylight on the
morning of the 26th, reported at camp with his prisoners.
After breakfast, the major, being apprised of the enemy's
whereabouts, proceeded cautiously, keeping his advance
guard well to the front. While passing near the summit
of the hill, the officer in command of the advance met
the Confederate advance, consisting of a first lieutenant
and thirty men, captured them without firing a gun, and
returning met the main body and turned them over to the
commanding officer. The Confederate lieutenant declared
that they had received no intimation of the advance from
Fort Union, but themselves expected to be there four days
later.

Descending Apache Canyon for the distance of half a mile,
Chivington's force observed the approaching Texans, about
six hundred strong, with three pieces of artillery, who,
on discovering the Federals, halted, formed line and battery,
and opened fire.

Chivington drew up his cavalry as a reserve under cover,
deployed Company D under Captain Downing to the right,
and Companies A and E under Captains Wynkoop and Anthony
to the left, directing them to ascend the mountain-side
until they were above the elevation of the enemy's artillery
and thus flank him, at the same time directing Captain
Howland, he being the ranking cavalry officer, to closely
observe the enemy, and when he retreated, without further
orders to charge with the cavalry. This disposition of
the troops proved wise and successful. The Texans soon
broke battery and retreated down the canyon a mile or more,
but from some cause Captain Howland failed to charge as
ordered, which enabled the Confederates to take up a new
and strong position, where they formed battery, threw their
supports well up the sides of the mountain, and again
opened fire.

Chivington dismounted Captains Howland and Lord with their
regulars, leaving their horses in charge of every fourth
man, and ordered them to join Captain Downing on the left,
taking orders from him. Our skirmishers advanced, and,
flanking the enemy's supports, drove them pell-mell down
the mountain-side, when Captain Samuel Cook, with Company F,
First Colorado, having been signalled by the major, made
as gallant and successful a charge through the canyon,
through the ranks of the Confederates and back, as was
ever performed. Meanwhile, our infantry advanced rapidly;
when the enemy commenced his retreat a second time, they
were well ahead of him on the mountain-sides and poured
a galling fire into him, which thoroughly demoralized and
broke him up, compelling the entire body to seek shelter
among the rocks down the canyon and in some cabins that
stood by the wayside.

After an hour spent in collecting the prisoners, and
caring for the wounded, both Federal and Confederate,
the latter having left in killed, wounded, and prisoners
a number equal to our whole force in the field, the first
baptism by fire of our volunteers terminated. The victory
was decided and complete. Night intervening, and there
being no water in the canyon, the little command fell back
to Pigeon's Ranch, whence a courier was despatched to
Colonel Slough, advising him of the engagement and its
result, and requesting him to bring forward the main
command as rapidly as possible, as the enemy with all his
forces had moved from Santa Fe toward Fort Union.

After interring the dead and making a comfortable hospital
for the wounded, on the afternoon of the 27th Chivington
fell back to the Pecos River at Kosloskie's Ranch and
encamped. On receiving the news from Apache Canyon,
Colonel Slough put his forces in motion, and at eleven
o'clock at night of the 27th joined Chivington at Kosloskie's.

At daybreak on the 28th, the assembly was sounded, and
the entire command resumed its march. Five miles out
from their encampment Major Chivington, in command of
a detachment composed of Companies A, B, H, and E of the
First Colorado, and Captain Ford's Company unattached,
with Captain Lewis' Company of the Fifth Regular Infantry,
was ordered to take the Galisteo road, and by a detour
through the mountains to gain the enemy's rear, if possible,
at the west end of Apache Canyon, while Slough advanced
slowly with the main body to gain his front about the
same time; thus devising an attack in front and rear.

About ten o'clock, while making his way through the scrub
pine and cedar brush in the mountains, Major Chivington
and his command heard cannonading to their right, and
were thereby apprised that Colonel Slough and his men
had met the enemy. About twelve o'clock he arrived with
his men on the summit of the mountain which overlooked
the enemy's supply wagons, which had been left in the
charge of a strong guard with one piece of artillery mounted
on an elevation commanding the camp and mouth of the canyon.
With great difficulty Chivington descended the precipitous
mountain, charged, took, and spiked the gun, ran together
the enemy's supply wagons of commissary, quartermaster,
and ordnance stores, set them on fire, blew and burnt
them up, bayoneted his mules in corral, took the guard
prisoners and reascended the mountain, where about dark
he was met by Lieutenant Cobb, aide-de-camp on Colonel
Slough's staff, with the information that Slough and his
men had been defeated and had fallen back to Kosloskie's.
Upon the supposition that this information was correct,
Chivington, under the guidance of a French Catholic priest,
in the intensest darkness, with great difficulty made
his way with his command through the mountains without
a road or trail, and joined Colonel Slough about midnight.

Meanwhile, after Chivington and his detachment had left
in the morning, Colonel Slough with the main body proceeded
up the canyon, and arriving at Pigeon's Ranch, gave orders
for the troops to stack arms in the road and supply their
canteens with water, as that would be the last opportunity
before reaching the further end of Apache Canyon.
While thus supplying themselves with water and visiting
the wounded in the hospital at Pigeon's Ranch, being
entirely off their guard, they were suddenly startled by
a courier from the advance column dashing down the road
at full speed and informing them that the enemy was close
at hand. Orders were immediately given to fall in and
take arms, but before the order could be obeyed the enemy
had formed battery and commenced shelling them.
They formed as quickly as possible, the colonel ordering
Captain Downing with Company D, First Colorado Volunteers,
to advance on the left, and Captain Kerber with Company I
First Colorado, to advance on the right. In the meantime
Ritter and Claflin opened a return fire on the enemy with
their batteries. Captain Downing advanced and fought
desperately, meeting a largely superior force in point
of numbers, until he was almost overpowered and surrounded;
when, happily, Captain Wilder of Company G of the First
Colorado, with a detachment of his command, came to his
relief, and extricated him and that portion of his Company
not already slaughtered. While on the opposite side,
the right, Company I had advanced into an open space,
feeling the enemy, and ambitious of capturing his battery,
when they were surprised by a detachment which was concealed
in an arroya, and which, when Kerber and his men were
within forty feet of it, opened a galling fire upon them.
Kerber lost heavily; Lieutenant Baker, being wounded,
fell back. In the meantime the enemy masked, and made
five successive charges on our batteries, determined to
capture them as they had captured Canby's at Valverde.
At one time they were within forty yards of Slough's
batteries, their slouch hats drawn down over their faces,
and rushing on with deafening yells. It seemed inevitable
that they would make the capture, when Captain Claflin
gave the order to cease firing, and Captain Samuel Robbins
with his company, K of the First Colorado, arose from the
ground like ghosts, delivering a galling fire, charged
bayonets, and on the double-quick put the rebels to flight.

During the whole of this time the cavalry, under Captain
Howland, were held in reserve, never moving except to
fall back and keep out of danger, with the exception of
Captain Cook's men, who dismounted and fought as infantry.
From the opening of the battle to its close the odds were
against Colonel Slough and his forces; the enemy being
greatly superior in numbers, with a better armament of
artillery and equally well armed otherwise. But every inch
of ground was stubbornly contested. In no instance did
Slough's forces fall back until they were in danger of
being flanked and surrounded, and for nine hours, without
rest or refreshment, the battle raged incessantly.
At one time Claflin gave orders to double-shot his guns,
they being nothing but little brass howitzers, and he
counted, "One, two, three, four," until one of his own
carriages capsized and fell down into the gulch; from which
place Captain Samuel Robbins and his company, K, extricated
it and saved it from falling into the enemy's hands.

Having been compelled to give ground all day, Colonel Slough,
between five and six o'clock in the afternoon, issued
orders to retreat. About the same time General Sibley
received information from the rear of the destruction of
his supply trains, and ordered a flag of truce to be sent
to Colonel Slough, which did not reach him, however, until
he arrived at Kosloskie's. A truce was entered into until
nine o'clock the next morning, which was afterward extended
to twenty-four hours, and under which Sibley with his
demoralized forces fell back to Santa Fe, laying that town
under tribute to supply his forces.

The 29th was spent in burying the dead, as well as those
of the Confederates which they left on the field, and
caring for the wounded. Orders were received from General
Canby directing Colonel Slough to fall back to Fort Union,
which so incensed him that while obeying the order he
forwarded his resignation, and soon after left the command.