President James Polk pushed for the war to acquire California, then part of Mexico. Anti-slavery Northerners viewed expansion as a way to create more slave territory. Hitchcock predicted vast bloodshed would result from U.S. aggression. He was right.
He graduated from the United States Military Academy at West Point, commissioned a third lieutenant and quickly rose through the ranks of the U.S. Army. He served in the Seminole War in Florida and as the right-hand man of Gen. Winfield Scott during the Mexican-American War.
Hitchcock was a devoted scholar, an admirer of the philosopher Spinoza and a collector of books on alchemy and flute music.
In 1845, Hitchcock was serving in the 3rd Infantry Regiment. He viewed the impending conflict with Mexico with dread and despair. “For ten years we have been encroaching on Mexico and insulting her,” he wrote. “Her people I consider a simple, well disposed, pastoral race, no way inclined to savage usages.”
On June 30, 1845, Col. Ethan Allen Hitchcock was stationed at Fort Jessup in Louisiana. He had just learned of orders to move the army to the west bank of the Rio Grande. Hitchcock believed Texas had no right to claim the territory they were ordered to defend. He wrote in his diary:
Fort Jessup, La., June 30, 1845. Orders came last evening by express from Washington City directing General [Zachary] Taylor to move without any delay to some point on the coast near the Sabine or elsewhere, and as soon as he shall hear of the acceptance by the Texas convention of the annexation resolutions of our Congress he is immediately to proceed with his whole command to the extreme western border of Texas and take up a position on the banks of or near the Rio Grande, and he is to expel any armed force of Mexicans who may cross that river. [William W. S.] Bliss read the orders to me last evening hastily at tattoo. I have scarcely slept a wink, thinking of the needful preparations. I am now noting [writing] at reveille by candlelight and waiting the signal for muster....Violence leads to violence, and if this movement of ours does not lead to others and bloodshed, I am much mistaken....
With thanks to History Is A Weapon. This story was updated from the 2014 version.