Do you understand that there is a difference between testing equipment and training people, and that testing equipment in a way that puts people at risk when better and safer alternative methods exist?
Neil, taking Jason's point, what is more important for the military (a) training with live ammunition
every time they train (b) using blank ammunition so they train tactics and procedures?
There were many ways to train the astronauts and their vehicles without placing them in a vacuum chamber each time, just as there are many ways to train the military without risking their lives. While live ammunition is used by the military, blank ammunition and training simulators are often preferred as they are cost effective and do not risk people's live. There are many military deaths each year from training exercises, but then the numbers involved in the training run into the thousands. The over all percentage of deaths is quite small. In fact, Apollo had a higher percentage death rate if you consider the Apollo 1 fire. That occurred during a plugs out test. Neil Armstrong came close to death while using the LM trainer. Your claims don't hold water against the reality of Apollo.
There is a thread here that lists all the problems that occurred during Gemini, Mercury and Apollo, and the idea that the US space program went without a glitch -all to support your doubts - is bogus.