Girvin, pp .124 –125 Walshe's memoranda affected de Valera, with him telling MacDonald that Great Britain  could not destroy this [German] colossal machine  .Girvin, p .129 Nevertheless, from May 1940, Walshe and Col Liam Archer of Irish Military Intelligence discussed the defence of Ireland in the event of a German invasion with counterparts in Northern Ireland and a general strategic plan for UK military action "Plan W" across the border "if invited" was developed.
<fluency> Girvin, pp .124 –125 Walshe's memoranda affected de Valera, with him telling MacDonald that Great Britain  could not destroy this [German] colossal machine  .Girvin, p .129 Nevertheless, from May 1940, Walshe and Col Liam Archer of Irish Military Intelligence discussed the defence of Ireland in the event of a German invasion with counterparts in Northern Ireland and a general strategic plan for UK military action "Plan W" across the border "if invited" was developed.
Girvin, pp . 124 –125 Walshe's memoranda affected de Valera, with him telling MacDonald that Great Britain could not destroy this [German] colossal machine .Girvin, p .129 Nevertheless, from May 1940, Walshe and Col Liam Archer of Irish Military Intelligence discussed the defence of Ireland in the event of a German invasion with counterparts in Northern Ireland and a general strategic plan for UK military action "Plan W" across the border "if invited" was developed.