I am still struggling with LOS determination in conjunction with elevation. 6.1.2 Hill-Level LOS If the attacker is on Hill Level, it cannot fire at an enemy unit if its LOS crosses a Crest Line unless the target … or either the attacker or the target is adjacent to the Crest Line. If the attacker is on Hill Level, it cannot fire at a Ground-Level enemy unit that is behind and adjacent to a hex that blocks LOS. The target is considered behind LOS blocking terrain if the LOS from the attacker to the defender crosses a LOS blocking-terrain hex adjacent to the target before it reaches the target’s hex. If the attacker is on a Hill Level, it cannot fire at an enemy unit on Ground Level if a Hill hex is between the attacker’s hex and target’s hex. Here are rather exhaustive examples I've created trying to make sure I understand once and for all: QUESTIONS: 1. Unit A is on the Hill? At the edge of the “Crest Line”? But is it “adjacent” to the Crest Line between it and Unit C? Does “adjacent” really mean its hex-sides composed of the Crest Line? 2. Otherwise, is Unit B adjacent to the Crest Line between it and Unit C? 3. Unit A has LOS to Unit C, since Unit C and Unit A are adjacent to the Crest Line? 4. Unit B also has LOS to Unit C, since Unit C is adjacent to the Crest Line? 5. Unit B has NO LOS to Unit J, as neither Unit is adjacent to the intervening Crest Line? 6. Unit A has NO LOS to Unit I, but if it were one more hex away it would not be blocked by the woods? 7. Unit D is on a Level 2 Hill? 8. Unit D has LOS to Unit F, as both are adjacent to one of the two intervening Crest Lines? 9. Unit D has NO LOS to Unit H, as it not adjacent to both Crest Lines? This doesn’t seem to make sense. 10. Would Unit G still have LOS to Unit K, as the latter is adjacent to the Crest Line? 11. In which case, why would Unit G NOT have LOS to Unit K – it should have a better angle?