ColinWright
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Joined: 10/13/2005 Status: offline
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quote:
ORIGINAL: jmlima quote:
ORIGINAL: Curtis Lemay ... The wadi is a desert feature. That is just the situation it's supposed to be used in. It's not comparable to a river - it doesn't have any water in it. (See the Rapahannock example above). Hmmm... No wanting to become involved in the bickering, but it's a bit pointless to be debating what a Wadi is. It's not an abstract feature, it's a real world geological feature, well defined. A wadi is indeed not a river, but that is hardly the gist of the discussion, since that is obvious from the start, a wadi is 'A stream valley in an arid region that is dry except during the rainy season.' As a stream valley they came in many sizes and shapes, and if some are trench size, I would debate that some , like Wadi Rum, could be thought as being a trench. In fact, if we think how we would defend a wadi and how we would defend a significant river valley crossing, we would still defend at the opposite bank. Examples of defending at the banks like in : http://www.firstworldwar.com/battles/wadi.htm http://books.google.co.uk/books?id=yfpozlstWuIC&pg=PA84&lpg=PA84&dq=defending+in+a+wadi&source=bl&ots=zy6FbxI-Gq&sig=Z7Gnwayc7SszcaYunx7uqzMNq58&hl=en&ei=aFlXS4bFCtW14Qa_1723Aw&sa=X&oi=book_result&ct=result&resnum=10&ved=0CCoQ6AEwCQ#v=onepage&q=defending%20in%20a%20wadi&f=false Now, should a wadi be treated the same as a river? Hardly. Crossing a river poses a series of problems that a wadi does not (water being one of them... some wadis are wide enough for tanks to manoeuvre...) , but if a river is .7 to the attacker, seriously crippling the attacker, short of having 'major and minor wadis', the wadis should still, obviously, add some encumbrance to an attacker. TOAW has: 11.9.3 Additional Land Movement Costs - Wadi: Mountain units no effect, Motorized and Mixed movement +2, all others +1 13.9.4 Defensive Strengths of Infantry - Forest, Jungle, Hills, or Wadi (any Deployment), or Defending Deployment (any terrain): x2.0 13.9.5 Defensive Strengths of Static Equipment - Urban, Urban Ruin, Forest, Jungle, Hills, Bocage, or Wadi (any Deployment), or Defending Deployment (any terrain): x1.5 And for the rivers: 11.9.4 River Movement Costs Rivers and Canals (as opposed to super rivers or Suez Canal) normally add 2 to the cost of entering a location. ... 13.9.6 Unit Strengths in Water Assaults Land units attacking from River, Super River, Canal, Suez Canal, or Deep Water (Amphibious Assaults) have all Strengths multiplied by 0.7. So, in resume, Wadis benefit the defender (as we saw before, defender gets benefit from being at a bank, attacker may potentially have plenty of room to maneuvre at the wadi base), whilst a river creates an encumbrance (obvious) on the attacker. Conclusions? Each to his own. Given that we only have one type of wadi, and no hex-border rivers , I think the engine actually is correct WITHIN it's own assumptions and limitations. Just my 2p. It is true that Wadis are not the same as rivers. However, the two classes of obstacles pose a similar problem. In both cases, the attacker has to make a difficult crossing while exposed to enemy fire from the higher ground along the far bank.* What's more, the two types of terrain -- rivers and wadis -- do segue into each other. The Litani in Lebanon presented a formidable obstacle to the advancing Australians in 1941. Technically, it was a river -- there's a flow of water in it year round -- but one can wade it easily enough in June. Really, as a military obstacle, it's more of a wadi. However, this doesn't mean that it doesn't have to be bridged, that the bridge can't be blown up, that troops attempting to attack across it aren't delayed by having to clamber down into the bed and then back out again, that they aren't exposed to fire from the far side while doing so, etc. As to maneuvering along the bottom of the wadi -- sure, in many cases you can. But then, the starting point of this whole argument was my assertion that generally the river canyon itself offers the best route of travel. One can march along the shore of many rivers. Indeed, armies usually do so. And if there are river canyons that are impassible, there most certainly are wadis where one cannot move easily along the bottom. One look at Google Earth will confirm that. The presence or absence of water isn't irrelevant -- a river with water is going to be more of an obstacle than a river without it, all things being equal. However, militarily a wadi and a river are similar in nature, and their treatment in OPART should be similar. * That is, unless General LeMay is in command, in which case the defenders have been ordered to 'shelter in the wadi.' I suppose it would be an improvement over ordering them to 'wade into the river.'
< Message edited by ColinWright -- 1/20/2010 8:38:31 PM >
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