This needs a lot of corrections, I'll start at the top.
1934 - There's surely a better picture than this bright yellow car. Maybe a Citroen Kegresse type instead?
1935 - The light tank model name should either be a Renault R 35 or a Hotchkiss H 35. The picture is an H 35.
1936 - The light tank picture is an H 39, which came out in 1938-9. The name is wrong. You could use the Renault R 35 here, or probably better the FCM 36. The Rolls Royce armored car (which I assume refers to the WWI era vehicle - that wasn't used by the French) should be replaced by perhaps moving the Panhard 165 down, and then replacing that with the older Laffly AMD 50. Utility vehicle picture is some American sedan. The Laffly S15 would be a better choice.
1937 - The picture is a SOMUA S 35, and if you didn't want to use the same tank twice, the only other choice is the slightly older Renault D2.
1938 - The light tank picture is a Renault R 40, which would be a better choice anyhow. Not sure what the amphibious tank is supposed to be. The French didn't have one, and this is a dead end anyway. Probably best to remove it.
1939 - The picture for the S 35 looks like a conjecture of the S 40. The assault gun picture is Italian, maybe replace it with the SAU 40? The Beaverette is another British vehicle, and the picture is a Laffly AMD 80. Replace this with the Panhard 178. Utility vehicle is a jeep, maybe replace it with the Unic P107 or something?
1941 - I have no idea what that light tank is, but the name is wrong. The S 40 picture is not correct, but you should probably change the name to whatever the picture is. The assault gun picture is again Italian, there must be something better. Maybe the ARL V39? The ARL 44 picture is something else entirely.
1942 - The amphibious tank picture looks like a Soviet BMP. Again, not sure why it would be necessary to have one, but you can probably just photoshop something more French-looking. The Humber (again British) picture is the Panhard 178. Replace this with the Panhard 201. Another jeep utility vehicle, but I have no replacement ideas.
1943 - Not sure what the medium tank is, but the name is wrong. Another Italian SPG which needs to be replaced. The AMX M4 picture is the ARL 44, and the FCM F1 looks rather antiquated. If it's intended to be a superheavy, the FCM 2C would be a great addition to 1934.
1944 - Light tank name is wrong, the picture is an AMX 13, which is from 1952. The amphibious tank is Japanese. Since these are all dead ends, can you even upgrade one to the other?
1945 - Looks okay, but the first two tanks are probably from much later.

Edit - On all of these trees, the abbreviations are mixed formats. Lt.TK, Lt-Tank, etc. Since the tree is organized by types, it isn't even necessary to include those in the names at all, but if you do, standardize the format.