If you take modern tech into account, NO, why? Nukes... When you have a Nation like the USA with something like 80% of its Nuclear arsenal on board submarines that can go anywhere there is an ocean or sea connected to an ocean there really is no way we could have actual first world nation states going to war on that scale in modern times.
Now, some may point to the USA's current war in Afghanistan (or that one that supposedly just finished in Iraq) And to that I point out that: A First world vs Third world, and B instead of our entire male populations age 18-35 going to war we have an enlisted military force set on the backs of the lower middle - poor in regards to social/economic status.
Add to that the recent innovations of planes being flown in Pakistan by people who are on a military base in Arizona. Or self driving cars, and yeah, we are making war SO SO much less personal in today's world that we are able to have them for a decade and still do things like worry about being late to the premiere of The Avengers in theaters.
I mean seriously folks we have become WAY too detached from the ugliest part of human existence. In the old days, when a country went to war the King was on the front lines. Worst thing Bush had to deal with? a pretzel, and a shoe. It is a different world we live in, one where countries can be erased with the turn of 2 keys, and we are reaching the point, more and more where warriors don't need to be on the battlefield.
But to the ones that are, I do support wholeheartedly, and thank you for your service.