This brigade organization with, among other things, different rates of movement between the tanks and armoured infantry battalions (the main part on military bicycles) reduced the brigade's attack power and was quickly outrun by international development with its demands for higher standards, mobility and constant division in the battlefield. Already at the end of the war, Sweden was unhelpful in technical development. Therefore, a large number of heavy tanks (Centurion) were purchased in 1953 and a reorganization - Pbrig 58 - started with mixed battalions which included a tank and two bicycle transporting infantry companies, one of which could be transported on KP-bil's. Attacks were carried out on foot and the tank was given a supporting role. The attack speed was limited to 5 km/h. Older tanks' gun turrets were used as gun turret fortifications at ports and airfields, and &lt;a href="Stridsvagn%20m/41"&gt;Stridsvagn m/41&lt;/a&gt; and &lt;a href="Stridsvagn%20m/42"&gt;Stridsvagn m/42&lt;/a&gt; were rebuilt into Pansarbandvagn 301 and Stridsvagn 74 respectively.