I thought this drama will be in high tense from begining since I heard that DotS was extremely overrated by my friends. "It's tensing. Its actors were in action of missions. It's touching, too." But, after watch it, let me say.. it is indeed an action romance drama.. But, its action scenes were not as much as I expected. However, I would like to include medical things (surgical ops  etc) into action category. So, although its actions were not as many as expected, but I enjoyed  doctors' act. I learned something new about medical sciences from DotS.
Story: +3. It's not complicated (like Black or School 2015), doesn't have a plot goal, yet entertaining.
Containing humor: +3. I give this overrated value. Humors always came when actors came into scenes. Especially, in this drama, I love soldiers' life and humors.
I love the characters (it's not like I love to see handsomeness or beauty with glancing eyes): +2. It's like anyone has humor sense, so it's entertaining me.
It doesn't have a plot twist and plot goal. Some scenes are odd if you think realistically.
It still can make anyone feel the tense. +1