13th Continental Regiment

The 13th Continental Regiment, also known as Read's Regiment, was raised April 23, 1775, as a Massachusetts militia regiment at Cambridge, Massachusetts, under Joseph Read. The regiment would join the Continental Army in June 1775. The regiment saw action during the Siege of Boston, the New York Campaign and the Battle of Trenton. The regiment was disbanded on January 1, 1777, at Morristown, New Jersey.

Source: Wikipedia DBpedia

What is the citizenship or nationality of Read's Regiment?

Read's Regiment is Continental Congress and Commonwealth of Massachusetts.

When did the career of Read's Regiment start?

The career started in 1775.