Helme left his law practice and enlisted in the
Confederate States Army on March 8, 1862, in
New Orleans as a captain in the Crescent Regiment, commanding Company G, Marion Rangers, nicknamed the Ruggles Guards. The regiment went immediately to
Corinth, Mississippi, to reinforce General
P. G. T. Beauregard's army. On April 6, 1862, the regiment played an important role in the capture of two Federal divisions during the
Battle of Shiloh. The regiment commander's report of the engagement cited Captain Helme as "among the line officers I have great satisfaction in mentioning ... as distinguished for coolness, bravery, and the faithful discharge of their duty..." The regiment was disbanded on June 3, 1862, at the expiration of its 90-day enlistment, most of the men being transferred into the 18th Louisiana Regiment. Captain Helme resigned on June 19, 1862, when he was transferred to the mining service of the Trans-Mississippi Department. This assignment may have been related to an act of April 11, 1862, establishing the
"Niter and Mining Bureau", which was charged with the securing of
niter (
saltpeter) for the manufacture of gunpowder, copper, lead, iron, coal, zinc, and other such materials as might be required for the prosecution of the war. The bureau opened new coalfields in
North Carolina and
Alabama and coordinated the flow of mineral fuel to Confederate naval stations along the coast. A corps of officers was established for this purpose. Captain Helme's earlier experience back in Pennsylvania working for Asa Packer may have influenced this assignment. On June 9, 1864, another act was passed which increased the rank of the officers involved. There is nothing in the early Confederate records to indicate that Helme was anything other than a
captain, although later biographical sketches identify him as a
major general. (His son-in-law, Charles Godfrey Strater, identified him as a Major in a private family document printed in 1928.) When the war ended, Helme returned north, to
New Jersey and
New York City, where he engaged in the
real estate business for several years, acquiring considerable property. ==Helmetta: Snuff town==