Enlisted

RCT > PVT: No Cooldown.
PVT > PFC: 1 Day Cooldown.
PFC > LCPL: 2 Day Cooldown.

LCPL > CPL: 3 Day Cooldown.
CPL > SGT: 3 Day Cooldown.

[5.2] Non-commissioned Officers

SGT > SSGT: 5 Day Cooldown.

SSGT > MSGT: 5 Day Cooldown.

MSGT > SM: 7 Day Cooldown.

SM > WO: Handpicked by SCMD+

[5.3] Junior Command

WO > 2LT: 2 Week Trial.

2LT > 1LT: 2 Week Trial / Cooldown.
1LT > CPT: 2 Week Trial / Cooldown.

[5.4] Senior Command

CPT > MAJ: 2 Week Trial / Cooldown.

MAJ > LTCOL: 2 Week Trial / Cooldown.

[5.5] Command Overseers
LTCOL > COL: 2 Week Trial / Cooldown.
COL > VCMDR: Chosen by the Director of Intelligence.

[5.6] High Command

VCMDR > CMDR:  Chosen by the Director of Intelligence.