15.1: Grain represents a cultivated field with any of a variety of standing crops. Any yellowish or buff colored area such as 3Z4 is considered grain.
15.2: Grain is considered a Hindrance to same-level LOS by adding a +1 DRM for every grain hex [EXC: see A6.7] through which that LOS crosses the grain depiction between the firer and target.
15.3: Grain has no TEM, but because it is not Open Ground it negates Interdiction/
EX: The 4-6-7 squad in 4V3 may Defensive First Fire at the Non-Assault Moving 4-4-7 in W4 with eight FP (PBF) and a -1 DRM (FFNAM). If fired on in X4, the 4-4-7 would be subject to four FP and 0 DRM (-1 [FFNAM] +1 [Hindrance] = 0). The same target in Y5 would be subject to four FP and a +1 DRM (-1 [FFNAM] +2 [Hindrance] = +1).
15.4: The MF costs for entering a grain hex are 1½ MF for all Infantry, Cavalry, and Horse-Drawn units.
15.5: Grain may be kindled on a DR ≥ 10 and Fire will spread to it from an adjacent Blaze on a DR ≥ 6 (both subject to modification; see section 25).
15.6 SEASON: Grain does not exist and is treated as Open Ground outside its growing season which, if otherwise undefined, extends from June to September (inclusive). The effect of plowed fields in April and May retains the increased movement cost of grain, but is considered Open Ground for all other purposes.