He was called up to join the Royal Corps of Signals.

Brown joined the Royal Flying Corps in 1917, and remained with this group until the end of the war.

He joined the Royal Flying Corps in 1916, and was commissioned three weeks later.

Roe, who had recently joined the Royal Flying Corps, then left for the front.

Despite that, he joined the Royal Flying Corps the following year, as a pilot officer.

Three years later he joined the United States Marine Corps.

The following year he joined the United States Marine Corps.

In 1916, at age 17, he joined the United States Marine Corps.

While in college, he also joined the United States Marine Corps.

He joined the United States Marine Corps in 1888 for a period of five years.