Train, Saint Germain-en-Laye, 1944

Saint Germain-en-Laye is located in the western suburbs of Paris, according to Wikipedia. 

Saint-Germain-en-Laye is served by Saint-Germain-en-Laye station on Paris RER line A.
It is also served by two stations on the Transilien Paris – Saint-Lazare suburban rail line: Saint-Germain – Bel-Air – Fourqueux and Saint-Germain – Grande Ceinture.
Finally, Saint-Germain-en-Laye is also served by Achères – Grand Cormier station on Paris RER line A and on the Transilien Paris – Saint-Lazare suburban rail line. This station is located in the middle of the Forest of Saint-Germain-en-Laye, far away from the urbanized part of the commune.

But this tidbit stopped me in my tracks: The town was the headquarters of the German army during the Occupation, 1940-44. If I'm reading the faded rectangle in the lower right correctly, it says "Passed
44630 Army Examiner." Should it be read as June 30, 1944, and the stamp as belonging to the U.S. Army Examiner? Liberation began on June 6 that year, but was not complete until December. I hope someone can enlighten me.