Polybius Square Cipher
Key
Polybius Square Cipher is essentially identical to the simple substitution cipher, except that each plaintext character is enciphered as 2 ciphertext characters. It can ususally be detected if there are only 5 or 6 different characters in the ciphertext. [Wikipedia]
This algorithm offers very little communication security, and can be easily broken even by hand, especially as the messages become longer (more than several hundred ciphertext characters).
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A1Z26 Cipher
A1Z26 Cipher, is a simple substitution cipher that replaces each letter of the alphabet with its corresponding numerical position in the alphabet.
ADFGVX Cipher
ADFGVX Cipher is a transposition and substitution cipher used during World War I by the German Army. The name "ADFGVX" comes from the six possible letters used in the cipher: A, D, F, G, V, and X.
ADFGX Cipher
The ADFGX Cipher is a fractionating transposition cipher which combined a modified Polybius square with a single columnar transposition. It is closely related to the ADFGVX Cipher.