How many presidents served in the Union Army?
6
2
2
2
2
2
2
4
3
2
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
1
5
4
3
0
1
5
4
3
1
0
5
4
3
1
6
5
0
4
7
3
1
6
5
4
7
3
0
1
6
5
7
1
0
6
5
7
6
5
0
7
6
8
5
7
0
6
8
5
7
0
6
8
5
7
6
8
5
7
6
8
5
7
9
6
8
5
7
9
6
8
7
9
6
8
7
9
6
8
7
13
9
6
8
7
13
9
6
8
11
7
13
9
6
8
11
10
7
13
9
No
6
8
11
10
7
13
9
12
No
6
8
11
10
7
13
9
12
No
6
8
11
10
7
265
13
9
12
No
8
11