Editing Shell (projectile) (section)

===Guided shells===
{{main|Cannon-launched guided projectile|Precision-guided munition}}
Guided or "smart" ammunition features some method of guiding itself post-launch, usually through the addition of steering fins that alter its trajectory in an unpowered glide. Due to their much higher cost, they have yet to supplant unguided munitions in all applications.
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Image:XM982 Excalibur inert.jpg|[[M982 Excalibur]], a GPS guided artillery shell
Image:Copperhead and tank.JPEG|[[M712 Copperhead]], a laser guided artillery shell, approaches a target tank
Image:SMArt 155 SubMunition for Artillery 2 cutaway.jpg|[[SMArt 155]], an anti-armour shell containing two autonomous, sensor-guided, [[fire-and-forget]] submunitions
File:XM1156-PGK.svg|[[M1156 precision guidance kit]], an add-on GPS guidance system for artillery shells
File:BONUS 155 mm.jpg|[[Bofors/Nexter Bonus]], with [[Infrared sensor|infrared]] and [[Lidar|LiDAR]] guided submunitions
</gallery>