He actually did have the backing of a lot of the military top brass. The problem is that the rank and file wouldn't back the brass in clearly violating lawful orders from the government. A big part of why those soldiers sent into parliament did such a shit job is because they obviously weren't even sure they were supposed to be there.
Nor did he secure political and military alliences before hand. You can only stop coups by voting if it is a really shit coup lol
He actually did have the backing of a lot of the military top brass. The problem is that the rank and file wouldn't back the brass in clearly violating lawful orders from the government. A big part of why those soldiers sent into parliament did such a shit job is because they obviously weren't even sure they were supposed to be there.