June 22, 1895 - the first Chemical Company 2 was organized and placed in service at 3119 14th Street N.W. with an 1895 C.T. Holloway double tank 170 gallon chemical engine.

July 1,1897 - Engine Company 11 was organized and replaced the first Chemical Co. 2 at 3119 14th Street N.W. with an 1885 Clapp & Jones 450 GPM steam engine and an 1886 McDermott Bros. hose reel carriage. Chemical Company 2 (the second) was reorganized and placed in service at 5760 Georgia Ave. N. W. with their same apparatus.

May 13, 1901 - Truck Company "F" was organized and placed in service at 1336 Whitney Ave. N.W. (now Park Road N.W.) with a 1901 LaFrance/Hayes 75' aerial ladder truck and a 1901 C.T. Holloway double tank 70 gallon combination chemical hose wagon.

July 6, 1906 - All truck companies began using numbers instead of letters. Truck A became Truck 1, Truck B became Truck 2, etc., etc.

June 18, 1927 - Rescue Squad No. 2 was organized and placed in service as a combination unit with Engine Company 11. When dispatched as a Rescue Squad, Engine 11's hose wagon was used as the Rescue Squad. Engine 11's pumper would then be staffed by extra men from nearby Truck Company 6 and then Engine 11 would be back in service running as a single piece engine company until the wagon returned. The hose wagon was a 1926 Seagrave hose wagon with added rescue equipment by DCFD repair shop.

1932 - reserve water tower 2 was placed in the quarters of Truck Co. 6.

1940 - A consultant's report recommended consolidating many companies for an economical improvement to the department.

June 4, 1940 - Engine 11 moved to the quarters of Truck 6.

May 9, 1946 - Rescue Squad 2 was organized and placed in service as a separate unit from the combination unit with Engine 11.

The original apparatus for Rescue Squad 2 was the hose wagon of Engine 11 until a new pumper was converted by the DCFD shop to rescue squad service. This was a 1945 Buffalo 750 GPM pumper.

May 21, 1946 - Rescue Squad 2 and Ambulance 2 moved to the quarters of Engine Company 14 at 4801 North Capitol St. N.E.

June 5, 1984 - Engine Company 11 and Truck Company 6 moved to new quarters at 3420 14th Street N.W.