How many presidents served in the Union Army?
6
2
1
2
1
2
1
4
2
1
4
3
2
1
4
3
2
1
4
3
5
2
1
4
3
5
2
1
4
3
5
2
1
4
3
5
2
1
4
3
5
2
1
4
3
0
5
2
1
4
3
5
0
2
1
4
3
5
2
1
4
0
3
5
2
1
4
3
0
6
5
2
1
4
3
6
5
0
2
1
4
3
6
5
2
1
4
3
6
5
2
1
4
3
7
6
5
2
1
4
3
7
6
5
8
4
3
7
6
5
8
4
3
7
6
5
8
3
7
6
5
8
9
7
6
5
8
9
11
7
6
5
8
9
11
7
6
8
9
10
11
7
6
8
9
10
11
7
6
8
9
10
11
7
6
8
13
9
10
11
7
12
6
8
13
9
10
11
7
12
6
8
13
9
10
11
7
12
6
8
13
9
10
11
14
7
12
6
8
13
9
10
11
62
66
62
66
62
61
58
59