Help with what abbreviations mean

I located information on a Great Uncle who served in World War I. I had written for help on him before. I need help on the abbreviations used in Organizations he was in during the War.

Name Matthew Cornetta

Enlisted Ft. Slocum, N. Y. Jan. 23. 1918

Organizations: 3rd Motor Mec Regt Stg C to June 1, 1918
9th Co 3 Regt Air Serv Mec AEF to April 9, 1919
463 Aero Sq to discharge

Can some one decipher the unit info and does anyone know about Ft. Slocum. d. gaddie

 

Organizations: 3rd Moto Mechanic Regiment Staging C to June 1, 1918
9th Co 3 Regiment Air Service Mecanic American Expeditionary Forces (Army) to April 9, 1919
463 Aerological Squad to discharge

Someone may be able to correct me, i just went by 2 web sites i found

Glossary of U.S. Naval Abbreviations (OPNAV 29-P1000)
Authorized abbreviations used in organizational records


Hope someone could correct or validate what i wrote for you.

 

Fgrun83--You can't believe how hard I've looked to find for a list of Navy abbreviations. Thanks a million and a well deserved salute.

 

Fgrun83
Thanks so much for help and sites. Now I want to try to figure out where he was overseas by the company and units. If anyone has ideas where to start looking, please add info.

I have found several sites on Ft. Slocum which is also David's Island. It was one of largest recruiting stations in World War I. d. Gaddie

 

I found some abbreviations on my Dad's service record envelope. I have checked several abbreviation sites but can't seem to put them together. Hope some one can help:
NHSI
TWX TAG SPGAP
TWX AFPMP
TWX WARTAG WDGAP
TWX TAG WDGAP WARTAG

He was in Signal Corp in New GUinea and was instructor swithchboard operator. Thanks. dng

 

Military Acronyms, Initialisms, and Abbreviations

Military Acronyms, Initialisms, and Abbreviations

TWX 1joint message form, 2teletypewriter exchange service, 3theater war exercise ​

TAG1the Adjutant General, 2transient analysis generator, 3technical advisory group, 4technical assistance group, 5tactical airlift group, 6topic area guide, 7troop action guidance, 8training advisory group, 9[CJCSI 6271.01] technical assessment group ​

I'm Not sure about the bottom Ones ???​

AFPMP could be Armed Forces Philippines Modernize Program​

WDGAP War Department General Administration Personal​

 

Thanks for definitions. I am hoping to connect them to my Dad's service record. He was in the Philippines too. I am trying to find out what Company and Unit he was in and hoped these abbreviations would give a cue. It appears that in Fall of 1942 he was at Camp Crowder which was School for Signal Corps. It actually became The Central Signal Corps Training Center. It was located in Neosho, Missouri which is about 25 miles from Joplin, Missouri. dng