Washington, D. C., Oct. 18.—­The War Department has received the following to-day: 

“San Juan, Porto Rico, Oct. 18.—­Secretary of War, Washington, D. C.:  Flags have been raised on public buildings and forts in this city and saluted with national salutes.  The occupation of the island is now complete.

“Brooke, Chairman.”

The two Spanish fleets—­of the East and West Indies, were annihilated, the former May 1st, and the latter July 2nd, two months and two days between the events.  The respective fleets in Manila bay were as follows: 

American Fleet.

Name Class Armanent Men and
          
                                                     Officers
Olympia Protected Cruiser Four 8-in., ten 5-in., 24 R.F. 466
Baltimore Protected Cruiser Four 8-in., six 6-in., 10 R.F. 395
Boston Par.  Ptd.  Cruiser Two 8-in., six 6-in., 10 R.F. 272
Raleigh Protected Cruiser One 6-in., ten 5-in., 14 R.F. 295
Concord Gunboat Six 6-in., 9 R.F. 150
Petrel Gunboat Four 6-in., 7 R.F. 100
McCulloch Revenue Cutter Four 4-in 180

Spanish Fleet.

Name.  Class.  Armament.  Men and
          
                                                     Officers
Rema Cristina Steel Cruiser Six 6.2-in., two 2.7,
                                          13 R.F. 370
Castilla Wood Cruiser Four 5.9, two 4.7, two 3.4,
                                          two 2.9, 12 R.F. 300
Don Antonio de Ulloa Iron Cruiser Four 4.7, 5 R.F. 173
Don Juan de Austria Iron Cruiser Four 4.7, two 2.7, 21 R.F. 173
Isla de Luzon Steel Ptd.  Cruiser Six 4.7, 8 R.F 164
Isla de Cuba Steel Ptd.  Cruiser Six 4.7, 8 R.F 164
Velasco Iron Cruiser Three 6-in., two 2.7, two
                                          R.F. 173
Marques del Duero Gunboat One 6.2, two 4.7, 1 R.F. 98
General Lezo Gunboat One 3.5, 1 R.F. 97
El Correo Gunboat Three 4.7, 4 R.F. 116
Quiros Gunboat 4 R.F. 60
Villalobos Gunboat 4 R.F. 60
Two torpedo boats and two transports.

The American squadron was thus officered: 

Acting Rear Admiral George Dewey, Commander-in-Chief.

Commander B.P.  Lamberter, Chief-of-Staff.

Lieutenant L.M.  Brumby, Flag Lieutenant.

Ensign H.H.  Caldwell, Secretary.