UNITED STATES FORCES

5th Fleet (Task Force 50)
    V.Adm. Raymond A. Spruance, in New Jersey

Task Force 58 (Fast Carrier Force)
        R.Adm. Marc Mitscher, in Yorktown

Task Group 58.1
        R.Adm. John W. Reeves

CV USS Enterprise - Capt. M.B. Gardner
    Air Group 10 - 32 F6F, 30 SBD, 16 TBF; 4 F4U (night fighters)
CV USS Yorktown - Capt. R.E. Jennings
    Air Group 5 - 37 F6F, 36 SBD, 18 TBF; 4 F6F (night fighters)
CVL USS Belleau Wood - Capt. A.M. Pride
    Air Group 24 - 24 F6F, 8 TBF

Crudiv 13
        R. Adm. L.T. DuBose

CL USS Santa Fe - Capt. J. Wright
CL USS Mobile - Capt. C.J. Wheeler
CL USS Biloxi - Capt. D.M. McGurl
CLAA USS Oakland - Capt. W.K. Phillips

Desron 50
        Capt. S.R. Clark

DD USS C.K. Bronson - Lt. Cdr. J.C. McGoughran
DD USS Cotten - Cdr. F.T. Sloat
DD USS Dortch - Cdr. R.C. Young
DD USS Gatling - Cdr. A.F. Richardson
DD USS Healey - Cdr. J.C. Atkeson
DD USS Cogswell - Cdr. H.T. Deuterman
DD USS Caperton - Cdr. W.J. Miller
DD USS Ingersoll - Cdr. A.C. Veasey
DD USS Knapp - Cdr. F. Virden
 

Task Group 58.2
        R. Adm. A.E. Montgomery

CV USS Essex - Capt. R. A. Ofstie
    Air Group 9 - 36 F6F, 34 SBD, 19 TBF
CV USS Intrepid - Capt. T.L. Sprague
    seriously damaged by a torpedo hit
    Air Group 6 - 37 F6F, 36 SBD, 19 TBF; 6 4 F4U (night fighters)
CVL USS Cabot - Capt. M.F. Schoeffel
    Air Group 31 - 26 F6F, 9 TBF

Cruisers
        R.Adm. L.J. Wiltsie

CA USS Baltimore - Capt. W.C. Calhoun
CA USS Wichita - Capt. J.J. Mahoney
CA USS San Francisco
CLAA USS San Diego - Capt. L.J. Hudson

Desron 52
        Capt. G.R. Cooper

DD USS Owen - Cdr. R.W. Wood
DD USS Miller - Cdr. T.H. Kobey
DD USS The Sullivans - Cdr. K.M. Gentry
DD USS Stephan Potter - Cdr. C.H. Crichton
DD USS Hickok - Cdr. W.M. Sweetser
DD USS Hunt - Cdr. H.A. Knoertzer
DD USS Lewis Hancock - Cdr. C.H. Lyman
DD USS Stack - Lt. Cdr. R.E. Wheeler
DD USS Stembel
 

Task Group 58.3
    R. Adm. F.C. Sherman

CV USS Bunker Hill - Capt. T.P. Jeter
    Air Group 17 - 38 F6F, 31 SB2C, 20 TBF; 4 F6F (night fighters)
CVL USS Monterey - Capt. L.T. Hundt
    Air Group 30 - 25 F6F, 9 TBF
CVL USS Cowpens - Capt. R.P. McConnell
    Air Group 25 - 24 F6F, 9 TBF

Cruisers
        R. Adm. R.C. Giffen

CA USS Minneapolis - (Capt. R.W. Bates?)
CA USS New Orleans

Desron 46
        Capt. C.F. Espe

DD USS Izard - Cdr. E.K. Swearingen
DD USS Charette - Cdr. E.S. Karpe
DD USS Conner - Cdr. W.E. Kaitner
DD USS Bell - Cdr. L.C. Petross
DD USS Burns - Cdr. D.T. Eller
DD USS Sterrett - Lt. Cdr. F.J. Blouin
DD USS Lang - Cdr. H. Payson
DD USS Bradford - Cdr. R.L. Morris
DD USS Brown - Cdr. T.H. Copeman
DD USS Cowell - Cdr. C.W.Parker
DD USS Wilson - Lt.Cdr.C.K. Duncan
 

Task Group 50.9
        V.Adm. W.A. Lee (attached to TG 58.3)

TU 50.9.1
        R.Adm. O.M. Hustvedt

BB USS Iowa - Capt. J.L. McCrea
BB USS New Jersey - Capt. C.F. Holden

TU 50.9.2
        R.Adm. G.B. Davis

BB USS Massachusetts - Capt. T.D. Ruddock
BB USS Alabama - Capt. F.D. Kirtland

TU 50.9.3
        R.Adm. E.W. Hanson

BB USS South Dakota - Capt. A.E. Smith
BB USS North Carolina - Capt. F.P. Thomas

Submarine Patrol
SS Searaven - Lt. Cdr. M.H. Dry
SS Seal - Cdr. H.B. Dodge
SS Sunfish - Lt. Cdr. E.E. Shelby
SS Skate - Lt. Cdr. W.P. Gruner
SS Tang - Lt. Cdr. R.H. O'Kane
SS Aspro - Cdr. W. A. Stevenson
SS Burrfish - Cdr. W.B. Perkins
SS Darter - Cdr. W.S. Stovall
SS Dace - Lt. Cdr. B.D. Claggett
SS Gato - Cdr. R.J. Foley

IJN FORCES AT TRUK
    Atoll commander - R.Adm. Chuichi Hara, ashore

Light cruisers
Agano*—Captain Matsuda Takamutsu*
    sunk by two submarine torpedoes, 533 dead
Katori*
    damaged by aerial torpedo, finished off by 8in and 5in gunfire
Naka*
    broken in two by one bomb and one torpedo, 210 survivors

Eight destroyers
Oite*—Lieutenant Yasuhiro Uono*
    lost with all hands
Fumizuki*—Lieutenant Commander Yoshiharu Nagakura
    flagship of Commander Michio Oka, Comdesdiv 22
Matsukaze—Lieutenant Tetsuo Kadono
Maikaze*—Lieutenant Commander Tsutomu Hagio*
    flagship of Captain Kenma Isogu*, Comdesdiv 4
    lost with all hands
Nowaki—Commander Setsuji Moriya
Yamagumo—Commander Shirou Ono
Tachikaze*—Lieutenant Commander Yasuteru Yokota
    already hard aground, struck by torpedo and sunk
    one other, unknown

Miscellaneous warships

SC 24*
AMC Akagi Maru*
AMC Kiyosumi Maru*
and others

More than fifty merchant ships
    Thirty-two ot these were lost (totaling 200,000 tons), including AS Rio de Janeiro Maru*, AS Heian Maru*, AKV Fujikawa Maru*, six AOs*, 17 AKs*
 

More than 350 planes
    250-275 destroyed or damaged.

*sunk or lost in this operation

Sources:
Battle History of the Imperial Japanese Navy by Paul S. Dull
Japanese Cruisers of the Pacific War by Eric Lacroix and Linton Wells III
Nihon Kaigun web site
United States Naval Operations in World War II, Vol. VII: Aleutians, Gilberts and Marshalls by S.E. Morison
Chronology of the War at Sea 1939-1945 by Rohwer & Hummelchen