It is thus, very important to understand factors that motivate enlistment and reenlistment. Many infantry soldiers purchased Henrys with their reenlistment bounties of 1864. For a significant number of these men, that reenlistment date was December 26, 1863. Another important aspect is the RE (Reenlistment Eligibility) Code. The reenlistment included a review of job performance and a full medical examination.