Cap pouch with "square" outer flap bearing applied brass letter and numerals "C / 165" (crazing and cracking to leather throughout, with a few punctures to inner flap and pouch; lacking wool and pick). Inner flap unmarked. "61" carved into latch tab. "NY" twice carved into back of pouch. Belt loops, latch tab, and pointed brass finial all present and complete. 

The 165th New York Infantry Regiment, or 2nd Battalion Duryea's Zouaves, was initially recruited for nine months' service. This term changed to three years, and six companies of men were mustered into service between August and December of 1862. The regiment saw action at Ponchatoula, Port Hudson, Bayou Vermillion, Sabine Cross Roads, Pleasant Hill, Deep Bottom, and Cedar Creek before being honorably discharged and mustering out in September of 1865.