I noticed this nice comparison of military forces from BBC page:
http://www.bbc.co.uk/news/world-us-canada-16428133 (I know its a
bit simplified).
Some highlights:
UK $63.7bn, 174,000 personnel
Russia $52.7bn, 956,000 personnel
I know that Russia has conscription, lower material costs (fuel, food etc.) and so on but still that comparison doesn't make sense.
USA $739.3bn, 1,569,000 personnel
China $89.9bn, 2,285,000 personnel
I agree with small print (below comparison table) that China's official military budget figure is nonsense. It can't be that low.