If you're looking for girls, fan service, a light hearted action story, and friendship. You're in the right place, if not I suggest this anime isn't for you.
Story: 7/10
The story sounded interesting as I read the synopsis. It is unique in it's own way, battling aliens with striker units. But the catch is you have to be a witch, and the most important one, no pants. You would think when fighting aliens the story would be full of sadness. Not for Strike Witches as the anime itself is a light-hearted anime story.
Art: 9/10
The art was a strong point for Strike Witches. Judging when this anime came out the animation seems to be ahead of it's time. Not really any noticeable 3-D scenes. All characters have their key differences so you know who's who. And when they have their battles you can really sit back and enjoy the fan service and girls kicking alien ass.
Sound: 7/10
The sound was good at the most. Not really any special things to point out, nor are they're any bad things to point out. The one thing was the timing when the soundtracks played, it was timed nicely to fit that certain moment.
Character: 9/10
They give all the characters some background so you know what has gone on in their lives and how they are now. They're is some development here and there for the sides but for the main her development had gone up sky high throughout the series. The characters were a major plus for this series.
Enjoyment: 9/10
I enjoyed this series overall, seeing the power of friendship brings me joy. Every once in awhile I need an anime like this, some comedy, love, fan service. The characters did not disappoint, they brought when they needed to, to the table when ever they were called upon. Over all the series was just plain fun.
Overall rating: 8/10