Chief-23 arrived to a large 2-1/2 story SFD with heavy fire 1st floor "A" "D" corner of the house. He ordered Ladder-23 to stretch an 1-3/4 water line thru the front door. Engine-23 reverse layed from the scene to the hydrant. 3 lines were placed in service for an aggressive interior attack. The fire was knocked with minimal extension to the 2nd floor thru the walls. Comapny-25, Engine and air 24 were called to the scene along with Rescue-21 for the R.I.T.