[1] On 1839, his father moved to Greensburg, Indiana, where Grover would spend time attempting to pursue various interests.

[1] In 1860, Grover was nominated to be a member of the Indiana House of Representatives and was elected with a majority vote of 731 and remained there until the outbreak of the American Civil War.

[2][3] During his pre-war life, Grover was described as being energetic, industrious and persevering as well as a kind friend and a faithful public servant.

[3] He first saw active combat at the Battle of Port Republic but was wounded during the fighting, afterwards returned to the regiment and was promoted to major.

[5][3] On March 13, 1865, Grover received a brevet promotion to brigadier general for "gallant and meritorious services at the battles of Corrick's Ford and the Wilderness, Va."