If trains and buss are no longer safe places for soldiers on their way to work, surely they are no longer safe for ordinary citizens either.
"The best thing you can do is to make an effort to kill any infidel, French, American, or any of their allies... Smash his head with a rock, slaughter him with a knife, run him over with a car throw him from a high place, choke him or poison him." — Mohammed al-Adnani, ISIS spokesman, September 2014.
Instead of telling their soldiers to hide themselves, Western governments should tell their soldiers to show themselves to make clear to the jihadists, and to frightened citizens, that we in the West are not afraid of terrorists. On the contrary, we will root them out and come down on them with all our military might.