There are actually multiple reports regarding Luke's body and clothing. The first is not from Graves Registration at all, but from a liaison officer with the Red Cross who observed that Luke's watch was under his "combination" (not "
flyer's combination"... that distinction was not made in either original document).
Of course, a "combination" certainly could be an overall suit, but it could also be anything else under the sun and no further description was left by the writer (even though the same investigator wrote two descriptions of the exhumation). His shirt and jacket comprised a "combination," a coat and uniform are a "combination," and an overall suit could be a "combination" in the sense that it combines a coat with pants. The word "combination" did not exclusively refer to a flyer's overalls.
So we really can't infer anything from that other than whatever Luke was wearing was not wildly unusual for an aviator.
While in training, Luke wore the same outfit on a daily basis, consisting of a heavy leather double breasted jacket with a wide collar, along with gloves, helmet and goggles. These went with him to France, where he bought a second pair of boots (which were later found in his trunk and returned to his family, where they remain today) and adopted an officer's uniform with aviator's emblems. Luke was pictured frequently stateside in the same flying gear regularly, so this is the only absolute standard that we have to go by... and Luke was certainly a creature of habit, even using the same pockets for the same items daily. Anything else we find must demonstrate that Luke switched from his habitual gear to something new.
The Frenchmen who retrieved the body on the morning of 30 September 1918 wrote of Luke's apparel using the common French term for normal daily dress,
vetements ("clothing"), rather than the term for overalls,
combinaisons. This indicates that Luke was still wearing the same flying gear that he'd always worn.
The Germans took an insignia from Luke's body, which they referred to as "stickpin" on the flyer's "breast." Of course, the winter-issue overall suit had no such emblem - the Germans were referring to the air service emblem on either the collar or upper left shoulder that was standard issue for aviator's uniforms. This also indicates that Luke was wearing the same gear he'd worn his entire career.
Luke's own correspondence with his family regularly reported his clothing acquisitions, yet not a word is mentioned about an overall suit. This does not mean that he did not have one, but it does mean that it required a departure from his character to have one and make no mention of it.
Further, Luke joined the 27th Aero in July, during the heat of summer, and would not have developed the habit of using overalls even if he'd had them. Had he survived into winter, perhaps he'd have switched to overalls permanently, but he was accustomed to flying in extremely hot weather. Lt. Tommie Lennon of the 27th, for example, is pictured in his personal photo album wearing his uniform in August and September, but switching to his overalls by late November. This is obviously not definitive, but its yet another indication that Luke was wearing the same gear he'd worn since training.
Additionally, Luke's work as a balloon buster usually kept him at low altitude. There was no need to prepare for high altitude temperatures because his flights, especially those in the last days of his life, were at low altitudes below 1500 meters.
Further, we know that Luke did not return to his home field at Rembercourt on the night of 28 September, and that his sortie that evening was in a new plane on short notice at 1700 hrs. He returned only briefly for a stormy, stressful meeting with Grant the following morning and stormed off the field in an instant of fury. So if he didn't have his overalls with him on the 28th - for a brief flight on short notice - then he probably did not have them at the time of his death the following evening.
And we know that his precious gold compass fell from his pocket during his death... what are the odds that he would take a possession of that value and put it in an outside pocket where it could easily be lost? Given Luke's constant habit of stuffing everything into the front left pocket of his uniform jacket, it seems incredibly unlikely that he would depart from that and put one of his prized possessions in an outer pocket. That leads one to the conclusion that he did, in fact, put his compass in usual pocket of his uniform and it dropped out during his crawl to Bradon Creek in the last moments of his life.
There are a host of other problems as well, including a reverse of the above... we can now demonstrate that Luke was indeed carrying a Colt on the day he died and he did, in fact, fire it in self defense. We also know that Luke preferred holster carry and was well known for holster carry throughout the 1st PG. But if Luke was wearing an overall while severely wounded and crawling in the last moments of his life, it would have been extremely difficult for him to draw his Colt under such circumstances. He would have had to unfasten his overalls, unfasten his belt, remove his overalls at least to his waist, and then draw his pistol, all while badly wounded and crawling on the ground under heavy enemy fire. That seems a tall order even for the talented
Frank Luke.
And of course, the clincher is found in the records for his re-burial at the Meuse-Argonne cemetery on November 1, 1921, which explicitly state that Luke's body was clothed in a "U.S. uniform."
That would pretty much seem to close the case.
We have excellent photos and details of Luke's normal flying gear, and this material served as the basis for Russ' painting. If there are any errors in his depiction, they are entirely my fault, not Russ', because he relied on my research for his work.
However, while I cannot "prove" anything without a time machine, the evidence seems fairly conclusive that Luke was not wearing an overall on the evening of his death. Instead, he was wearing his uniform, a heavy leather jacket with a wide collar that reached to mid-hip, goggles, gloves and helmet.