ZOC

[vakarr]

What do the secondary ZOC squares do?

This is what it says in the FOG 2 manual

"12.12.2. Effect of enemy ZOCs on Permitted Charges
An enemy unit which is directly facing a square has a primary ZOC (Zone of
Control) into that square.
A unit that is in the primary ZOC of an enemy unit (marked in red) cannot
charge a different enemy unit unless it is also in the primary ZOC of that unit.
In the screenshot, the cavalry cannot charge the cohort directly to their front
because they are in the primary ZOC of the other cohort.
This restriction also applies if the charge path passes through a (primary)
ZOCd square.

Non-light troops ignore the ZOC of enemy light troops.
Sometimes, when the default charge path chosen by the program passes
through a ZOCd square, the charge may still be possible by moving the unit to
a different intermediate square first.
ZOC restrictions apply equally to player and AI units."

Then in Page 129, it says:
"A unit exerts a zone of control on the three tiles in front of it. Units that enter
these tiles must stop."

So secondary ZOC squares just stop movement for a turn but not charges on subsequent turns? Sorry I have been unable to find the ZOC page in the FOG 1 rulebook, its index is useless (it lists ZOI but not ZOC).

Also, do all the FOG 1 cohesion test modifiers apply such as Rear Support?

[rbodleyscott]

What do the secondary ZOC squares do?

This is what it says in the FOG 2 manual

"12.12.2. Effect of enemy ZOCs on Permitted Charges
An enemy unit which is directly facing a square has a primary ZOC (Zone of
Control) into that square.
A unit that is in the primary ZOC of an enemy unit (marked in red) cannot
charge a different enemy unit unless it is also in the primary ZOC of that unit.
In the screenshot, the cavalry cannot charge the cohort directly to their front
because they are in the primary ZOC of the other cohort.
This restriction also applies if the charge path passes through a (primary)
ZOCd square.

Non-light troops ignore the ZOC of enemy light troops.
Sometimes, when the default charge path chosen by the program passes
through a ZOCd square, the charge may still be possible by moving the unit to
a different intermediate square first.
ZOC restrictions apply equally to player and AI units."

Then in Page 129, it says:
"A unit exerts a zone of control on the three tiles in front of it. Units that enter
these tiles must stop."

So secondary ZOC squares just stop movement for a turn but not charges on subsequent turns? Sorry I have been unable to find the ZOC page in the FOG 1 rulebook, its index is useless (it lists ZOI but not ZOC).

No point looking in the FOG1 rulebook as the system is different.

Secondary ZOCs prevent movement into an empty square beyond. They don't prevent charges into an adjacent square, but would prevent charges on units further away.

Their main purpose is to prevent units from slipping through kinks in the enemy line too easily.

Also, do all the FOG 1 cohesion test modifiers apply such as Rear Support?

The FOG2 cohesion test modifiers are listed in the manual - section 15.2. There is no modifier for rear support.

[vakarr]

Do evading units ignore ZOCs?

[rbodleyscott]

Do evading units ignore ZOCs?

Yes, and routers and pursuers.

[tmac11]

How and why do fractured units exert a zone of control and stop units charging other enemy played a game recently where a fractured unit just kept on advancing on enemy units and kept them in its ZOC and prevented them flanking/charging units seems like nonsense to me given they could never engage the units they were ZOC.

[rbodleyscott]

How and why do fractured units exert a zone of control and stop units charging other enemy played a game recently where a fractured unit just kept on advancing on enemy units and kept them in its ZOC and prevented them flanking/charging units seems like nonsense to me given they could never engage the units they were ZOC.

Because the enemy don't know they are Fragmented, they just know they aren't running away, so must be considered a threat.