The Army’s 1st Infantry Division celebrates its 96th birthday next week with a series of events at Fort Riley.

The annual Victory Week activities begin Monday with a 4-mile run around Custer Hill. Nearly 13,000 of the 18,000 soldiers assigned to the division are expected to take part.

Officials will cut a cake the following day at division headquarters.

The 1st Infantry Division is known as the Big Red One for its distinctive shoulder patch. It was established by the Army in 1917, making it the oldest division in the armed forces.