The Three grades are for CTE, CT1, CT2... which usually, (but not always) correspond to the level of training of Cpl, Sgt and Sgt Chef.
Its not always the case as some specialists have the higher grade without the Rank.
It is indeed a dog handler, for the whole army, the training used to be in the camp at Suippes by the 132e GCAT, not the 132e BCAT.
Good to know that, the camp at Suippes is also a very famous battlefield, I had been wondering if anyone would notice if I just wandered in for a look... i will give it a skip...
In the legion it was only the REP that had a dog section, but with the increased use of dogs over the last 10 years or so, there may now be more dog units, maybe the engineers...