You are likely referring to the Michael Drabenstadt who enrolled in Mt. Joy, Lancaster County, in April 1861 as a sergeant with Co. F, 15th Pennsylvania Infantry, and honorably discharged with his company August 7, 1861, in Harrisburg. Given that he held the rank of sergeant, it is unlikely that he was the company cook, although he may have cooked for his mess.

His wife's name was Mary Ann. He filed for and received a pension as did Mary Ann after his death. The file is located at the National Archives in Washington DC.