Doyle,

The First lost one gun at an engagement at Oaland, Mississippi in late 1862.

Here are a few excerpts from the report of Gen. C.C. Washburne of the loss.

Captain Walker, of the First Indiana, with his little howitzers in front

I have to report no loss of men during the engagement, but about 10 men wounded, only 1 of them seriously. The First Indiana lost 8 or 10 horses, which were killed during the engagement, and my body guard had 6 horses killed, and Lieutenant Meyers, commanding the body guard, had his horse shot under him and a bullet shot through his coat. I regret to have to report that during the confusion that ensued when the enemy charged on the head of our column, and before the First Indiana could get their guns in position, one of them, which had been too far advanced to the front, was captured and borne off by the enemy. This is the only event of the expedition that I have cause to regret; and yet knowing as I do from personal observation the determined character of the first onset of the enemy I do not regard the event as surprising, or one for which the company to which the gun belonged is censurable. The conduct of Captain Walker throughout is worthy of all praise