Martin kept a short diary, below are his entries for the time before Shiloh and during the Battle of Shiloh, including that he "took a cannonball as a souvenir":
January 30 - Mustered in to US service
February - Drill & Discipline at Camp Wood, Fond du Lac.
February 22 - Washington’s birthday - Fond du Lac gave a picnic for the entire Regiment and Col Wood read Washington’s Farewell Address to everyone.
March 8 - 1:00a struck camp, left Camp Wood; people of Fond du Lac gave everyone a bundle of food for breakfast and lunch. Went by rail to Chicago where marched for 2 hours through the city and had supper on train. Went by rail to Alton IL, boarded a steamer for St Louis (left on 10th at 3:00a arrived at sunrise).
March 10 - Marched 3½ miles to Benton Barracks, St Louis (Benton Barracks built by Maj-Gen John C. Freemont to house 35,000 soldiers, many in tents. Now called Fairground Park in St. Louis).
March 23 - Left Benton Barracks to report to Major General US Grant at Savannah TN
March 28 - Arrived Savannah TN
April 6 - Battle of Shiloh at Pittsburgh Landing, 7 miles from Savannah on the opposite side of the river. At 4p ordered to the battle front, arrived at midnight.
April 7 - At daylight, marched to the battlefield attached to General Smith Division. Ordered to attack a Rebel battery, attacked three times and repulsed, overtook battery on fourth attack. Took cannonball as souvenir.
April 8 - Guard duty at Pittsburgh Landing to July 23rd.
July 6 - Promoted to Full Lieutenant 2nd Class
July 23 - Marched to Hamburg TN; assigned guard duty as provost guard, to August 23rd
August 23 - Ordered to Corinth MS, arriving August 24. Assigned to Sixth Division of Second Brigade under General MacArthur.
August 27 - Ordered to tear up Railroad track on Mobile & Ohio Railroad; marched to Bethel, returned August 29th.
September 8 - Reconnoitering expedition, marching to Chewalla, returned on the 10th
September17 - Marched to Iuka MS, to reinforce General Rosecrans, attached to Second Brigade; camped near Burnsville MS.
September 18 - Marched about 10 miles from Iuka. Promoted to Full Lieutenant 2nd Class, with rank from July 6, 1862.
September 19 - Marched circuitous to east side of Iuka; went out on skirmishes.
September 20 - Marched to within 2 miles of Iuka, then received orders for whole Division under General Ord to go to Corinth. Forced march about 30 miles Camped about 4 miles from Corinth. Entered Corinth on the 21st.
October 3 - Skirmishes. Battle of Corinth. 78 killed and wounded.
October 5 - Pursued retreating Rebels to Ripley MS, returned to Corinth on the 12th.
October 29 - Promoted to Full Lieutenant 1st Class