$  A complex plan of development of Polish Army, introduced in the mid-thirties, assumed equipping infantry  $
$and cavalry units with organic anti-aircraft units.  As their main weapons Swedish 40 mm Bofors A/A gun,    $
$produced in Poland, was selected.  The plan wasn't completed until the war began.  Only first echelon       $
$divisions possessed four-gun platoons. Cavalry brigades had two-gun platoons.  Unfortunately, even these    $
$guns often didn't reach the front, held on their way for defence of important railway stations, bridges and $
$cities.  Guns were drawn by tracked C2P.built on TKS chassis. Bofors A/A guns could fight planes flying up  $
$to 4000 m., providing protection against low flying aircraft.  In order to defend important targets from    $
$high altitude bombardments, a 75 mm Polish A/A gun was designed. Its range 9500 m was at the time quite     $
$satisfying.  Batteries of these guns were deployed to protect strategically important buildings: railway    $
$stations, factories and bridges.  However, relatively low number of air defence means, in  condition of     $
$German aerial advantage, couldn't stop the destruction of communication centres. This in turn, delayed the  $
$mobilisation and transport of Polish reserve units.                                                         $
