John J. Pershing. Men of the 41st were aboard the SS Tuscania when it was torpedoed by a German U-boat and sunk off the coast of Northern Ireland. Order of battle Headquarters, 41st Division 81st Infantry Brigade 161st Infantry Regiment (former 2nd Washington Infantry and Companies A, B, C, and D, 3rd D.C. Infantry) 162nd Infantry Regiment (former 3rd Oregon Infantry and Companies E, F, G, and H, 3rd D.C. Infantry) 147th Machine Gun Battalion (former Machine Gun Company, 3rd D.C. Infantry, Machine Gun Troop, Washington Cavalry, Company H, 2nd North Dakota Infantry, and Machine Gun Company, 2nd Idaho Infantry) 82nd Infantry Brigade 163rd Infantry Regiment (former 2nd Montana Infantry and Companies I, K, L, and M, 3rd D.C. Infantry) 164th Infantry Regiment (former 2nd North Dakota Infantry, 1st Battalion and Machine Gun Company, 1st North Dakota Infantry, and 64 men from Headquarters Company, 3rd D.C. Infantry) 148th Machine Gun Battalion (former Companies I, K, and L, 4th South Dakota Infantry, and 2 officers from 2nd North Dakota Infantry) 66th Field Artillery Brigade 146th Field Artillery Regiment (75 mm) (former Headquarters and Supply Companies and 1st Battalion, 2nd Idaho Infantry, Battalion of Washington Field Artillery, and Battery A, New Mexico Field Artillery) 147th Field Artillery Regiment (155 mm) (former Headquarters and Supply Companies, 1st Battalion, and Companies H and M, 4th South Dakota Infantry, and Batteries A and B, Oregon Field Artillery) 148th Field Artillery Regiment (155 mm) (former Headquarters and Supply Companies and 1st Battalion, 3rd Wyoming Infantry, 1st Battalion Colorado Field Artillery, and 1st Separate Squadron Oregon Cavalry) 116th Trench Mortar Battery 146th Machine Gun Battalion (former 3rd Battalion, 2nd Idaho Infantry, Machine Gun Company, 3rd Wyoming Infantry, and Machine Gun Company, 4th South Dakota Infantry) 116th Engineer Regiment (former 2nd Battalion, 2nd Idaho Infantry, part of Headquarters Company, 2nd North Dakota Infantry, and Battalion of Oregon Engineers) 116th Field Signal Battalion (former 1st Battalion, Washington Signal Corps, and Supply Company, 3rd D.C. Infantry) Headquarters Troop, 41st Division (former Troop C, 1st Squadron Washington Cavalry) 116th Train Headquarters and Military Police (former portion of Headquarters Company, 2nd North Dakota Infantry, and Troops A, B, and D, 1st Squadron Washington Cavalry) 116th Ammunition Train (former 2nd and 3rd Battalions, 3rd Wyoming Infantry) 116th Supply Train (former Companies E, F, and G, 4th South Dakota Infantry) 116th Engineer Train (former Supply Company, 2nd North Dakota Infantry) 116th Sanitary Train 161st,