Neat, I was at Fort Sam Houston for almost 18 months when I was in the Army. If he was in the Flying Tigers or American Volunteer Group, there will probably be some record of him. There are several books about the group, so check those. However, I can also say that nearly every CBI AAF veteran was asked after WWII if he was with the Flying Tigers. The AVG was very popular in the press, and the press didn't distinguish between the AVG and the 14th Air Force- the patch of the 14th AF was a tiger with wings clutching an AAF star and was descended from the AVG. Here is what I can tell from the rest;
GO 105 45 WD was a War Department General Order. I don't know where there is a list of these, but this was one of the general orders for declaring campaign service in WWII. That means that based on those orders, your Grandfather was authorized to wear the campaign ribbon with two stars. There are two campaigns there- central burma and china offensive. The two stars awarded were displayed for the two campaigns. On a uniform, they are little five point stars placed in the center of the ribbon.
Now here's the bummer and the good news. The specific order for the Distinguished Unit Badge would have given you more information. The Distinguished Unit Citation was awarded to units for certain operations- this means your Grandfather was in those units while they were doing the things which earned them the badge. Finding that specific award might narrow down the number of units to search. But the good thing is that you can look up ALL the units in CBI which received the DUC during the war, and those are the units which your Grandfather may have been part of.
Knowing those two orders' information, you can probably pare down which units you need to research. Your Grandfather was in a unit which was involved in the Central Burma and China Offensive. The unit received a Distinguished Unit Citation. I found this link- it doesn't mean he was part of this unit, but it is what you can find in quick web searches:
http://cbi-theater-1.home.comcast.net/~ ... 21744.html
Here is what the rest of it means
"the aaf air crew member badge is under line 31: military qualifications and date. "
The air crew badge means wings. The wings are regular sized wings with a seal of the united states in a circular shield.
"iive also heard that when he wasnt wrenching on planes he did fly the hump for supplies. "
If he was aircrew, and in the CBI, he flew the Hump. The Ledo Road wasn't finished until 1945, so all supplies which went to China went over the Hump until then.
"under line 32: battles and campaings - china offensive central burma GO \2 overseas service bars
1 service stripe victory ribbon "
1 service stripe means he was in the service for at least three years. 2 overseas service bars means he was overseas for at least 12 months. These were displayed on the uniform on the left sleeve above the cuff- overseas bars are little gold bars sewn together. The service stripe is a little bigger, but it is at a 45 degree angle. If you look up ike jackets on ebay, you can see how they were displayed.
"distinguished unit badge WD GO(then the paper is cut off.. bad copy)
american theater campaing medal
EAME campaing medal
good conduct medal"
The Distinguished unit badge is described in the link I posted. The Europe, African, Middle Eastern medal and good conduct medal can be found displayed on ebay. The EAME was awarded to anybody who went through the theatre. Most units which were in CBI went through this area to get to CBI- that's why they got the medal. The American Theatre Campaign medal was awarded to everybody who served stateside. A Good Conduct Medal was not a common award- your Grandfather was a decent soldier.
"i have reason and authority for seperation: demobilization
Service school attended: aerial engineer
i also have that the place of seperation as fort sam houston, organization was 1264th army air forces base unit.
he was listed as a sergeant"
Sergeant suggests he was probably aircrew during most of his time. I would guess that he was probably an engineer for a C-46 or C-47. Here is a description of an Aerial Engineer in CBI:
http://www.lib.utexas.edu/ww2latinos/te ... 2C+Tomas+Z.
Hope this helps. If you have more, send more.