http://www.onwar.com/chrono/1940/jun40/f21jun40.htm
French defeat Italian attacks in Alps
Friday, June 21, 1940 www.onwar.com
On the Western Front... There are Italian attacks in some of the Alpine passes which are easily beaten off despite the weakness of the French forces which are left in these areas.
In Occupied France... The German armistice terms are given to the French delegation. The Germans will permit no discussion. In addition to the provisions for establishing a vestigial French state and for demobilizing the French armed forces there are stringent financial clauses. The French representatives are allowed to consult briefly with their government.
In London... RV Jones, who heads British Scientific Intelligence, gives evidence to an important investigating committee concerning a German radio navigation aid code named Knickebein. Churchill gives orders for countermeasures to be developed. Vital progress in this field is soon made and plays a large part in mitigated the effects of the German Blitz in the coming months. Henry Tizard, who, more than any other, has been responsible for organizing the British use of radar, resigns because his advice is disregarded. His resignation confirms the position of the less reliable Frederick Lindmann (Lord Cherwell) as Churchill’s principal scientific advisor.