Original sentence: At first, the Home Guard was armed with guns in private ownership, a knife or bayonet on a pole, Molotov cocktails and improvised flamethrowers.Far more men volunteered than the government expected and by the end of June, there were nearly 1.5 million volunteers.Only reinforced concrete structures such as pillboxes are common.Open areas were considered vulnerable to invasion from the air: a landing by paratroops, glider-borne troops or powered aircraft which could land and take off again.Well-equipped and highly mobile Panzer divisions of the Wehrmacht overran the prepared defences
Edited sentence: At first, the Home Guard was armed with whatever was available: guns in private ownership, a knife or bayonet on a pole, Molotov cocktails and improvised flamethrowers.Only reinforced concrete structures such as pillboxes are common, and until recently, even these have been unappreciated as historical monuments.Open areas were considered vulnerable to invasion from the air: a landing by paratroops, glider-borne troops or even powered aircraft which could land and take off again.Short of heavy weapons and equipment, the British had to make the best use of whatever was available.The announcement was met with enthusiasm and far more men volunteered than the government expected; by the end of June, there were nearly 1.5 million volunteers.Well-equipped and highly mobile Panzer divisions of the Wehrmacht easily overran the prepared defences, another painful lesson