Wow, didn't expect replies so quickly! Yes, it was WW1, as in the subject line.
Enoggera sounds very close to what I could read and, as it was obviously (from what EDO says, for which, thank you), a huge operation. It's clear from the letter that the man in question wasn't great at writing but, as they came from an English farming family, that wouldn't have been unlikely.
Sparrett, thank you for that link - I'll have a look. Sadly, like a lot of others, he didn't last long, although longer than some, I'd guess. He enlisted in December 1915, and died in France in July 1916. In his letter, he says he joined because his brothers back in England had. While he died, as did one of his brothers, three of his brothers survived. My husband's grandfather even returned to England with his horse! Thanks for you help, all. I'll now be able to finish transcribing the letter.