Back in dark ages, 2000, Jeff Grossman and I started thinking and working on siege rules for the War of the Spanish Succession. This went through fits and starts with Jeff doing most of the work as I had no WSS armies or fortresses at the time, but did have plenty of SYW figures.
Around 2003 this fell off the radar and then picked up again when Cartouche 2 (Piquet supplement) was being written in 205 - 2006 time frame. VW was cut from C2 as we just didn't have enough room in the rules and playtesting had been limited.
Then I started working on my Russo-Turkish War (1787-1792) project in 2009 and found out that for every field battle there was at least one siege during that war. With some of the sieges being dramatic and pivotal to the campaigns. Damn! I now need some proper siege rules!!
Hence, in the summer of 2009 I started collection fortress terrain for my gaming periods. I bought some old Architectural Heritage fortifications from my friend in Florida, I picked up some other fortresses (Bastions, Walls, etc) at Historicon, found that Hallmark makes great Siege equipment for the 18th century and picked up packs of those figures. I proceeded to make parallel trench systems, fascine bunches from Musket Miniatures, misc gear, boxes, crates, barrels, then made a mine entrance, then made some bridging pieces to cross the fort's ditch. Painted some sappers and then started playtesting.
I'm now on revision 7 of the rules and they are playing very well. I'll detail some of my terrain ideas in a later post. I hope to make the rules available via PDF (thourgh Piquet Inc in the beginning of 2010)
Strange how projects morph over time!