Having done both to varying degrees, please allow me to share some insights.
1. Long days. We all know that Soldiers are up before dawn conducting physical training. Times vary by installation, anywhere from 0400 to 0700. By the time most civilians are leaving for work, Soldiers are already hours into their day. Most work days for Soldiers is 0900-1700 (5 pm for civilians), but occasionally we get lucky and are released early. Bear in mind, this is in garrison; deployment means months away from our families and friends, and carry the hazards of incoming artillery or morter rounds, being shot at while out on patrol, or everyone's favorite, shelling at all hours until someone walks out and yells at the perpatraitors (this happened on my husband's first trip to Afghanistan). Teachers, while not having to deal with being shelled or shot at (for the most part - we hear all too often of shootings in our schools), have their own long days. They work their hours in the classroom with perhaps a 20-25 minute lunch. Then, they have to plan for the next few days, get assignments printed out/copied, grade 30 or more assignments and tests, figure out how to accommodate children who have individual struggles. Their days are equally long and challenging, just in a different manner.
2. Money. The decrease in the size of our armed forces has presented a dilemma to our service members: do more with less. This includes money for everything from basic supplies to training. Military members often find themselves having to pick up supplies as it can take months to receive an item ordered (case in point: I ordered graduation folders in November 2015. In December 2016, they had yet to be delivered). Training is even trickier; if it wasn't included in the budget when it was written in the summer before the fiscal year (October to September), the unit may not be able to support it. Teachers are given almost no money to run their classrooms. More often than not, they often have to spend their own meager paycheck to provide the tools their students need to succeed. I know for a fact that my son's teachers have spent their own money to get supplies such as tissues, wipes, markers, etc. And if they want additional training, they pay for that out of pocket and have to work on their education outside of classroom hours.
I'd add more, but I've run out of characters. If you want some more input, please feel free to reach out to me.