13th New York State Militia - 13th New York National Guard

The 13th New York Infantry Regiment is a completely different unit.

In April of 1862 legislation changed the designation of militia units to "National Guard."

1861
April 21	Moved to Annapolis, Md. under Colonel Abel Smith
April 23	Eight companies (486 men) mustered into United States service for three months and sailed in the steamship Marion to Annapolis
April-May	Guard railroad at Annapolis, Md., quartered in the buildings of the Naval Academy
May 7	Additional reinforcements raised the regiment's strength to 793 men.
May 18	Affair at Smith's Point, Md.
June 19	Moved to Baltimore, Md.
July 21	The regiment agrees to General Dix's request to extend its service by ten days
August 6	Mustered out of United States Service at Brooklyn, having lost 5 men to disease. Many of the regiment enlisted in the 87th New York Infantry.

1862
May 26	Ordered to Washington D.C.
May 28	Mustered in for three months United States Service
May 30	Left for Washington under Colonel Robert B. Clark
June- September	Served at Suffolk, Virginia as part of the 7th Army corps
September 12	Mustered out of United States Service at Brooklyn, having lost 1 man to disease and 1 killed in an accident

1863
June 18	Orderd to Harrisburg under Colonel John B. Woodward
June 20	Mustered in for three months United States Service and attached to 2nd Brigade, 1st Division, Department Susquehanna
July 2	Engagement near Fort Washington, Pa.
July 21	Mustered out of United States Service at Brooklyn, having lost 1 man to disease